Adhesion between the treated dielectric surface and plating was evaluated by the bond strength at the dielectric-plating interface by a 90[degrees] peel test
. Freshly processed with the novel SAP, plated dielectric samples were cut into 2.54 x 5.72cm L specimens and tested.
By far the most common test for flexible coatings is the peel test
. Anyone who has removed wallpaper from an old house already has considerable practical experience with the rudiments of this test.
Fora medical packaging laboratory, the PQ process validates different system configurations for different test types (e.g., peel test
and tensile test), and ensures that different operators use the same protocol to achieve similar results.
NPL with industrial partners have developed a tape peel test
that can be applied to the PCB or component surface.
There are many well-known types of the destructive testing methods like the tensile test, peel test
, tape peel test
, indentation bonding test, self-loading test, scratch test, blister test, beam bending test etc [13-16j.
Rated speeds from 0.04 to 5.0 meters/second (95 to 12,000 inches/minute) extend far beyond usual peel test
For example, in the automotive industry a weld is considered good if the average diameter of the pin remaining after the destructive peel test
exceeds a predefined minimum value.
It functions as a peel test
with up to 25 percent of peel failure stress being along the entire length of the seam during application of pressure.
Table 1 shows the peel test
results before and after heat exposure tests.
The following analysis is based on the work by Williams and coworkers [15, 16], Figure 2a shows an illustration of the fixed arm peel test
. In order to peel the skin from the substrate or core material, it is necessary to provide energy in the form of external work to the laminate.